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PDF UPD782 Data sheet ( Hoja de datos )
| Número de pieza | UPD782 | |
| Descripción | DOT MATRIX PRINTER CONTROLLER | |
| Fabricantes | NEC | |
| Logotipo |  |
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NEe Microcomputers, Inc.
NEe
J-LPD782
rpm~[~~~~ill~W
DOT MATRIX PRINTER CONTROLLER
DESCRIPTION
F EATU RES
PIN CONFIGURATION
The I'PD782 is an LSI Dot Matrix Printer Controller chip which contains all the circuitry and con-
trol functions for interfacing an 8-bit processor to the Epson Model 210,220 and 240 Dot Matrix
Printers. These printers are capable of printing up to 3,1 col umns per row with 7 x 7 dot matri x.
The I'PD782 is ideally suited for low-cost Electronic Cash Registers (ECR) and Point of Sale (POS)
systems because it frees the processor from direct control of the printer and simplifies 110 software.
There are nine separate instructions, which the IJPD782 will execute. Each of these instructions
requires a single a-bit byte from the processor to be executed. Upon receipt of the instruction, the
",PD782 assumes the control of the printer, increments the position of the print head, activates the
print solenoids, performs line feeds in either receipt or journal mode (or both), and performs all
these operations for an entire print line.
The p.PD782 contains its own on-board character generator of 96 symbols. It contains a 31 column
printer buffer and is capable of supplying status information to the host processor on both the
controller itself as well as the printer. After the character buffer is loaded from the host processor
the entire row is printed out with a single print command.
• Compatible with most Microprocessors !ncluding 8080A, 8085A, Z-80™ and others
• Capable of Interfacing to Epson Model 210, 210S, 220 and 240 Printers
• Print Technique - Serial Dot Matrix
• Print Font - 7 x 7 Dot Matrix
• Column Print Capacity
Model 210 - 31 Characters with 1 Dot Spacing; 26 Characters with 2 Dot Spacing
Model 210S - 28 Characters with 1 Dot Spacing; 23 Characters with 2 Dot Spacing
Model 220 - 14 + 14 Characters in Receipt/Journal Mode; 31 Characters in Normal Mode
Model 240 - 31 Characters
• 96 Character Set (Alphanumerics Plus Symbols)
• Print Speed - Approximately 3 Lines/Sec.
• Paper Feed Receipt and Journal; Fast Feed
• Paper Release and Ink Ribbon Change-Over Outputs "
• Motor Error and Write Request Interrupt
'.<
• On-Board 6 MHz Oscillator (External Crystal Requir;ed)
• Operates from a Single +5V Power Supply (NMOS'Technology)
• Available in 40 Pin Plastic Package
RIN
Xl
X2
RESET
VCC3
CS
VSS2
RD
C/O
WR
OPENl
DO
Dl
D2
D3
D4
D5
D6
D7
VSSl
2
3
4
5
6
7
8
9
/lPD782
VCCl
TIM
MTD
PR7
PR6
PR5
VDR/TOF
VDJ/TOB
NE
31 PFR
PFJ
RBN/PRS
STM
INT
VCC2
OPEN2
PR4
PR3
PR2
21 PRl
PIN NAMES
RIN
Xl X2
RESET
VCCl-3
VSSl-2
CS
RD
C/D
WR
OPENl_2
DO-D7
PR1-PR7
INT
STM
RBN/PRS
PFJ
PFR
NE
VDJ/BOF
VDR/BO"f
MTD
TIM
Reset In
Crystal Inputs
Reset
DC Power
Signal Ground
Chip Select
Read
Command/Data
Write
No Connection
Data Bus
Print Solenoids
Interrupt
Stamp
Ribbon/Paper Release
Paper Feed Journal
Paper Feed Receipt
Low Paper Detector
I
Validation J/BOF Sensor
Validation R/BOT Sensor
Motor Drive
Timing Signal
II
TM: Z-80 is a registered trademark of Zilog, Inc.
455
1 page  
AC CHABACTERISTICS Ta = O'Cto 70'C;VCC1_3 =+5V ± 5%;VSS1-2 = OV
fLPD782
PARAMETER
lSYMBOL
LIMITS
MIN TYP MAX
TEST
UNIT
CONOITIONS
Cs, C/O Setup to RD I
CS, CID Hold After RD t
R D Pulse Width
CS, CID to Data Out Delay
RD I to Data Out Delay
ROt to Data Float Delay
Recovery Time Between Reads
AndlOr Write
READ OPERATION
tAR
tRA
tRR
tAD
tRD
tDF
tRV
0
0
250
10
1
5000
180
180
lOa
ns
ns
ns
ns 00-7 Input
ns
ns
ns
I-'S
Cs, C/D Setup to WR I
CS, CID Hold After WR t
WR Pulse Width
Data Setup to WR t
Data Hold After WR t
RiN I to T 1 Preset Time
TIM I to PR1-7 t Delay
RBN I to MTD I Delay
RIN I to RBN t Delay
TIM I to PFJ, PFR t Delay
TIM I to SLR ! Delay
RIN I to STM I Delay
T125 I to STM t Delay
Stamp Time
TIM I to MTD t
WRITE OPERATION
tAW
tWA
tww
tow
two
0
0
250
150
0
5000
ns
ns
00-7 Output
ns
CL = 100 pF
ns
ns
PRINT OPERATION
tRT 140 I-'S
tTP 40
50 uS
tRM 5 I-'S
tRRBN
tTF
tTR
10
135
365
15 I-'S
500 us 6 MHz
385 I-'S Crystal
tRS
12.5
1-"
tTS
42.5
IJ-S
tSTM
150.03
200.03 m,
tTM
510 IJ-S
TIMING WAVEFORMS
CS OR C/D
DATA BUS
IOUTI
READ OPERATION
K
tRV
tAR r - -i- t R Rt- - j __ RA_
1J
r-- tRD
t---- 'OF
I--tAD-
DATA VALID
WRITE OPERATION
1\
II
CS OR C/O
DATA BUS
liN)
DATA MAY CHANGE
DATA MAY CHANGE
459
5 Page 
OPERATING PROCEDURES
fLPD782
Power-on Reset
Initialize the I-lPD782. (Reset the Column Buffer and set the Print-Head at the left
side.)
lOB'" 1
Check the Bus Buffer Status.
Indicate the format of the Column Buffer. Set the controller mode for the printer
model.
Check the Bus Buffer Status.
Write up to maximum number of characters into the column buffer.
Check the Bus Buffer Status.
Print the entire contents of the column buffer. Indicate "Line Feed" or "Slip
Release."
782DS-12-80-CAT
465
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet UPD782.PDF ] | |
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